Just a head's up that amp guru Lee Jackson's popular book, Ultimate Bench Warrior: How to Design, Build and Modify Custom Guitar and Bass Amplifiers, is available now at the Guitar World Online Store for $29.95.

In the book, Jackson covers:

• Tools of the trade
• The basics of soldering
• Different tube types, with specs and histories
• Electronic symbols
• Amplifier modifications from gain stages to adding reverbs
• Schematics of solidstate circuits and power supplies
• Lists of parts suppliers